django 错误“/polls/ 处的 NoReverseMatch”[重复]

Question

我正在学习一个教程，但我遇到了这些错误！为什么？我需要你的帮助。在错误页面上显示“NoReverseMatch at /polls/ 未找到带有参数“（1，）”的“详细信息”的反向。尝试了 1 种模式：['polls/$(?P[0-9]+)/$']" 请帮忙，我正在努力完成本教程。教程链接“https://docs.djangoproject.com/en/1.11/intro/tutorial04/”

我的 index.html

 {% if latest_question_list %}

 <ul> 
     {% for question in latest_question_list %}
         <li> <a href="{% url 'polls:detail' question.id %}">{{question.question_text}}</a></li>
    {% endfor %}
</ul>

 {% else %}
   <p> No polls are available </p>
{% endif %}

投票应用中的urls.py

from django.conf.urls import url
from . import views


app_name = 'polls'
urlpatterns = [
    url(r'^$', views.index, name='index'),
    url(r'^(?P<question_id>[0-9]+)/$', views.detail, name='detail'),
    url(r'^(?P<question_id>[0-9]+)/results/$', views.results, name='results'),
    url(r'^(?P<question_id>[0-9]+)/vote/$', views.vote, name='vote'),
    url(r'^(?P<question_id>[0-9]+)/vote/$', views.vote, name='vote'),
]

我在投票应用中的 views.py

from django.template import loader
from django.http import HttpResponse
from .models import Question
from django.shortcuts import get_object_or_404, render
from django.urls import reverse

# Create your views here.

def index(request):
    latest_question_list = Question.objects.order_by('-pub_date')[:5]
    context = {'latest_question_list': latest_question_list}
    return render(request, 'polls/index.html', context)

def detail(request, question_id):
    question = get_object_or_404 (Question,pk=question_id)
    return render(request, 'polls/detail.html' , {'question': question})

def results(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    return render(request, 'polls:results', {'question': question})



def vote(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    try:
        selected_choice = question.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        return render(request, 'polls/detail.html', {'question' : question, 'error_message': "You Didn't select a choice."})
    else:
        selected_choice.votes += 1
        selected_choice.save()
        return HttpResponseRedirect(reverse('polls:results', args=(question.id,)))

我在投票应用中的 detail.html

    <h1>{{ question.question_text }} </h1>
{% if error_message %}<p><strong>{{error_message}}</strong></p>{% endif %}

<form action="{% url 'polls:vote' question.id %}" method="post">
    {% csrf_token %}
    {% for choice in question.choice_set.all %}
        <input type = "radio" name="choice" id="choice{{ forloop.counter}}" value="{{choice.id}}"/>
        <label for="choice{{ forloop.counter }}">{{ choice.choice_text }}
</label><br>
    {% endfor %}
    <input type="submit" value="Vote">
</form>

Answer 1

你是否在根模块的 urls.py 中包含 polls.urls ？

例如：

urlpatterns = [
    url(r'^polls/', include('polls.urls')),
]